| pectoral | (n) either of two large muscles of the chest, Syn. musculus pectoralis, pectoral muscle, pectoralis, pecs |
| pectoralis major | (n) a skeletal muscle that adducts and rotates the arm, Syn. musculus pectoralis major, greater pectoral muscle |
| pectoralis minor | (n) a skeletal muscle that draws down the scapula or raises the ribs, Syn. musculus pectoralis minor, smaller pectoral muscle |